Journal
CHEMISTRY OF MATERIALS
Volume 15, Issue 2, Pages 568-574Publisher
AMER CHEMICAL SOC
DOI: 10.1021/cm021299i
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A skeleton structure, consisting of titania cylinders connecting the tetrahedral and octahedral voids among the close-packed spheres of an opal template, was prepared by using an intra-template condensation process of titania among close-packed monodispersed polystyrene particles with a size of 270 nm. Theoretical calculations show that this kind of structure can exhibit a novel band gap in a lower frequency range than known inverse opals and even two complete band gaps. The realization of the titania skeleton is regarded as the first step toward a qualitative band structure tuning for inverse opals.
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